please help me solve this problem

Boston Industries employs a standard cost system. Boston has established the following standards for the prime costs of its Life Jackets product line: Standard Quantity Standard Price/Hours Standard Cost Direct Materials 8 kg $1.70 per KG $13.60 Direct Labour 10.30 DLH $9.00 per DLH 2.70 Total Cost $16.30 During November, Boston purchased 160,000 KG of direct materials at a total cost of $288.000. The total factory wages for November were $39,000, 90% of this cost was for direct labour. Boston manufactured 19,000 Life Jackets during November using 141,500 kg of direct materials and 5,000 direct labour hours. Required: 1. What was the direct materials purchase price variance for November? What was the direct materials usage variance for November? 2. 3. What was the direct labour rate variance for November? 4. What was the direct labour efficiency variance for November